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146939 (2002 DR17)
Classification: Inner Main-belt Asteroid          SPK-ID: 2146939
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06178411969954822 5.1674e-08  
a 1.894222227059339 8.6857e-09 au
q 1.77718937424516 1.0264e-07 au
i 25.18040694439377 5.0794e-06 deg
node 123.5087182144545 1.0014e-05 deg
peri 34.40214408143277 5.2906e-05 deg
M 24.84513635778827 4.7037e-05 deg
tp 2458934.782096052055
(2020-Mar-26.28209605)
0.00012459 TDB
period 952.2364892895366
2.61
6.5495e-06
1.793e-08
d
yr
n .3780573460995975 2.6003e-09 deg/d
Q 2.011255079873518 9.2223e-09 au
  Orbit Determination Parameters
   # obs. used (total)      566  
   data-arc span      6663 days (18.24 yr)  
   first obs. used      2002-02-19  
   last obs. used      2020-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50513  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:22:28  

Additional Information
 Earth MOID = .806688 au 
 Jupiter MOID = 3.05726 au 
 T_jup = 3.837 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457440.5 (2016-Feb-22.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0618256047420454 5.1746e-08  
q 1.777250770997658 1.0277e-07 au
tp 2457030.379836360407
(2015-Jan-07.87983636)
0.00012995 TDB
node 123.5349904291549 1.0015e-05 deg
peri 34.47460138018299 5.2827e-05 deg
i 25.17836357353466 5.0791e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      566  
   data-arc span      6663 days (18.24 yr)  
   first obs. used      2002-02-19  
   last obs. used      2020-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50513  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:22:28  

Additional Information
 Jupiter MOID = 3.05726 au 
 T_jup = 3.837 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.677651352167943E-15 -5.306500472239076E-15 1.84523760472184E-12 1.973923059898744E-14 7.095077019235705E-13 -2.597115255061583E-14
q -5.306500472239076E-15 1.056205256076958E-14 -3.986641730424559E-12 -3.904702603286907E-14 -1.530666522346223E-12 5.29508075082737E-14
tp 1.84523760472184E-12 -3.986641730424559E-12 1.688740094460468E-8 5.40849263177834E-12 6.74967638204101E-9 -4.182780999291819E-11
node 1.973923059898744E-14 -3.904702603286907E-14 5.40849263177834E-12 1.00293070027321E-10 -8.789330377496963E-11 2.144270611188339E-12
peri 7.095077019235705E-13 -1.530666522346223E-12 6.74967638204101E-9 -8.789330377496963E-11 2.790692585523848E-9 -1.856833492993161E-11
i -2.597115255061583E-14 5.29508075082737E-14 -4.182780999291819E-11 2.144270611188339E-12 -1.856833492993161E-11 2.579698746854441E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO453935  

146939 (2002 DR17)          Discovered 2002-Feb-19 by Yeung, W. K. Y. at Desert Eagle
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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